[issue22831] Use "with" to avoid possible fd leaks

[CRYSTAL]

Change by CRYSTAL <Hinsonlcrystal at gmail.com>:


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components: +Build
nosy: +Hinsonlcrystal -Arfrever, berker.peksag, dstufft, eric.araujo, ezio.melotti, martin.panter, python-dev, rhettinger, serhiy.storchaka, vstinner
type: resource usage -> security
versions: +Python 3.9

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue22831>
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